NETIF_F_GRO_FRAGLIST
rcv->features & (NETIF_F_GRO_FRAGLIST | NETIF_F_GRO_UDP_FWD));
#define NETIF_F_SOFT_FEATURES_OFF (NETIF_F_GRO_FRAGLIST | NETIF_F_GRO_UDP_FWD)
if (likely(!(skb->dev->features & NETIF_F_GRO_FRAGLIST)))
if (skb->dev->features & NETIF_F_GRO_FRAGLIST)
if (unlikely(skb->dev->features & NETIF_F_GRO_FRAGLIST))